But in order to do this with effect, and to secure in this great assembly a preponderance to the commons, a change in the military organisation and tactics of the army became indispensable. In all aristocracies in an early stage of society, the ruling order or class has fought on horseback or in chariots and their subjects or dependents have fought on foot. The cavalry service under these circumstances has been cultivated, that of the infantry neglected; the mounted noble has been well armed and carefully trained in warlike exercises, whilst his followers on foot have been ill armed and ill disciplined, and quite incapable of acting with equal effect. The first great step then towards raising the importance of the infantry, or in other words, of the commons of a state, was to train them to resist cavalry, to form them into thick masses instead of a thin extended line, to arm them with the pike instead of the sword or the javelin. Thus the phalanx order of battle was one of the earliest improvements in the art of war; and at the time we are now speaking of, this order was in general use in Greece, and must have been well known, if only through the Greek colonies, in Italy also. Its introduction into the Roman army would be sure to make the infantry from henceforward more important than the cavalry; that is, it would enable the commons to assert a greater right in Rome than could be claimed by the houses, inasmuch as they could render better service. Again, the phalanx order of battle furnished a ready means for giving importance to a great number of the less wealthy commons, who could not supply themselves with complete armour; while on the other hand it suggested a natural distinction between them and their richer fellows, and thus established property as the standard of political power, the only one which can in the outset compete effectually with the more aristocratical standard of birth; although in a later stage of society it becomes itself aristocratical, unless it be duly tempered by the mixture of a third standard, education and intelligence. In a deep phalanx, the foremost ranks needed to be completely armed, but those in the rear could neither reach or be reached by the enemy, and only served to add weight to the charge of the whole body. These points being remembered, we may now proceed to the details of the great comitia of Servius.